public async Task <DataTransaction> GetTransactionAsync(Symbol symbol, EthereumTransactionHash hash)
{
var key = dataKeyProvider.GetKey(symbol);
var response = await DynamoDB.GetItemAsync(
TableName,
new Dictionary <string, AttributeValue>()
{
[nameof(DataTransaction.Address)] = new AttributeValue(key),
[nameof(DataTransaction.Hash)] = new AttributeValue(hash)
},
CancellationToken);
if (response.HttpStatusCode != HttpStatusCode.OK)
{
throw new HttpRequestException($"Response code did not indicate success: {response.HttpStatusCode}");
}
if (response.Item.Any())
{
return(Map(response.Item));
}
return(null);
}
public async Task <DataFundPerformance> GetPerformanceAsync(Symbol symbol, DateTime timeStamp)
{
var key = dataKeyProvider.GetKey(symbol);
var response = await DynamoDB.GetItemAsync(
TableName,
new Dictionary <string, AttributeValue>()
{
[nameof(DataFundPerformance.Address)] = new AttributeValue(key),
[nameof(DataFundPerformance.Date)] = new AttributeValue(timeStamp.ToISO8601String())
},
CancellationToken);
if (response.HttpStatusCode != HttpStatusCode.OK)
{
throw new HttpRequestException($"Response code did not indicate success: {response.HttpStatusCode}");
}
if (response.Item.Any())
{
return(Map(response.Item));
}
return(null);
}
private async IAsyncEnumerable <EthereumTransactionHash> ListAddressHashesAsync(
EthereumAddress address,
Symbol symbol,
string indexName,
string attributeName)
{
var key = dataKeyProvider.GetKey(symbol);
var lastEvaluatedKey = new Dictionary <string, AttributeValue>();
while (!CancellationToken.IsCancellationRequested)
{
var response = await DynamoDB.QueryAsync(
new QueryRequest()
{
TableName = TableName,
IndexName = indexName,
Select = Select.ALL_PROJECTED_ATTRIBUTES,
KeyConditionExpression = string.Format(
"#{0} = :{0}Val AND #{1} = :{1}Val",
attributeName,
nameof(DataOperation.ContractAddress)),
ExpressionAttributeNames = new Dictionary <string, string>()
{
[$"#{attributeName}"] = attributeName,
[$"#{nameof(DataOperation.ContractAddress)}"] = nameof(DataOperation.ContractAddress)
},
ExpressionAttributeValues = new Dictionary <string, AttributeValue>()
{
[$":{attributeName}Val"] = new AttributeValue(address),
[$":{nameof(DataOperation.ContractAddress)}Val"] = new AttributeValue(key)
},
ExclusiveStartKey = lastEvaluatedKey.Any()
? lastEvaluatedKey
: null
},
CancellationToken);
if (response.HttpStatusCode != HttpStatusCode.OK)
{
throw new HttpRequestException($"Response code did not indicate success: {response.HttpStatusCode}");
}
else
{
lastEvaluatedKey = response.LastEvaluatedKey;
}
foreach (var attributes in response.Items)
{
if (attributes.ContainsKey(nameof(DataOperation.Hash)))
{
yield return(new EthereumTransactionHash(attributes[nameof(DataOperation.Hash)].S));
}
}
if (!lastEvaluatedKey.Any())
{
break;
}
}
}